Author Topic: Bikefail  (Read 12710 times)

Bikefail
« on: July 26, 2013, 11:51:22 am »
OK, we need photos of your broken bike parts or even whole bikes.



Raw power!
"Yes please" said Squirrel "biscuits are our favourite things."

Maverick

  • One of the rural idle
    • Twoberries
Re: Bikefail
« Reply #1 on: July 26, 2013, 12:15:55 pm »
VN Yukon frame fail






Re: Bikefail
« Reply #2 on: July 26, 2013, 12:20:42 pm »
Good thread !

If nothing else, it will get everyone scouring their bikes looking for possible causes of catastrophic failure, which has to be good.
Rust never sleeps

Euan Uzami

Re: Bikefail
« Reply #3 on: July 26, 2013, 12:34:01 pm »
few years ago now, but:



rear mech snapped in two

RichForrest

  • T'is I, Silverback.
Re: Bikefail
« Reply #4 on: July 26, 2013, 12:49:46 pm »
Old one from a couple of years ago



Both sides went



Another from a year or so later


Re: Bikefail
« Reply #5 on: July 26, 2013, 01:25:39 pm »
Oh yes, reminds me, the famous "Condor Crack" caused by too short a shim in the seat tube of some of their frames:



The (ex) Condor Tempo (it was stolen before I spoke to Condor about getting a replacement frame. The insurance company paid out for an entire replacement bike.)
"Yes please" said Squirrel "biscuits are our favourite things."

Re: Bikefail
« Reply #6 on: July 27, 2013, 12:40:34 pm »
You show me yours and I'll show you mine....
VN Aeolus fail August 2012
Several months of dry weather creaking, and feeling a bit 'spongy' when delivering grunt, led to this.
Eventually replaced under VN's warranty.






Re: Bikefail
« Reply #7 on: July 28, 2013, 01:46:42 pm »
And lo! Today's picture (and story)


That'll make them sit up and pay attention in Sainsbury's car park.
The original (I suspect) rim on the rear of the Pompino I bought from Thing 1 last year.
I've had 9 months worth of commuting on it, Thing 1 - who knows how many years.....
Trust me when I tell you that it was a loud bang.

Funny thing is, I was thinking that the rims were looking a bit worn, so last Tuesday I ordered a pair of Goldtec Pro track hubs from BETD, and on Friday I went to Brick Lane Bikes and came away with a pair of Velocity Deep V rims.....

Mercifully, as I was laden with toothy comestibles, my speed was akin to walking pace.
Prior to leaving home, I felt the tyres and thought them to be a little soft. I put 7bar into each.
The journey on my way to the emporium includes a descent on which my RPM usually maxes out. As it did today.
I think I can count myself lucky.

Did I mention it was a loud bang?

Zipperhead

  • The cyclist formerly known as Big Helga
Re: Bikefail
« Reply #8 on: July 28, 2013, 02:06:04 pm »
I spent weeks (possibly months  :-[ ) riding around trying to track down the source of a creak on my Pompino. Finally I spotted it....



It nearly went far enough around to meet itself coming the other way

Our son does know who Boz Scaggs is, we've done ok as parents.

Re: Bikefail
« Reply #9 on: July 28, 2013, 02:10:43 pm »
Wow
^That's a scrapper.
*Goes off to look closely at his own Pompino*

MercuryKev

  • Maxin' n Audaxin'
Re: Bikefail
« Reply #10 on: July 28, 2013, 02:50:46 pm »
I wonder what would happen if your chain snapped when powering along at 20mph and then the split link jammed in your rear mech?  This maybe:


Gus

  • Loosing weight stone by stone
    • We will return
Re: Bikefail
« Reply #11 on: July 28, 2013, 04:48:27 pm »
I wonder what would happen if your chain snapped when powering along at 20mph and then the split link jammed in your rear mech?  This maybe:

I've tried that too, no pictures though. Did your rear wheel lock up too ?

Re: Bikefail
« Reply #12 on: July 28, 2013, 10:24:48 pm »
Another chain ripping the rear mech off at 28mph as I crossed the finish line on a TT a couple of years ago - ruined the frame and rear Kysrium wheel (spokes bent & rim split) as well as the mech.  :facepalm:



I suspect the bearings popped out of newly fitted jockey wheels, but can't prove it.  >:(
If it ain't broke, fix it 'til it is...

eck

  • Gonna ride my bike until I get home...
    • Angus Bike Chain CC
Re: Bikefail
« Reply #13 on: July 28, 2013, 10:45:08 pm »
I had similar a couple of weeks ago, bouncing along a rough road. Mech hanger broken, spokes broken, mech cage bent, gouge in seat stay, chain links bent.
New mech hanger fitted, new spokes fitted and wheel trued thanks to otherdave, awaiting replacement mech from YACFer, fingers crossed for seat stay,new chain fitted.
So, MercuryKev, Gus and Wobbly John, any idea what causes this catastrophe?  ???
It's a bit weird, but actually quite wonderful.

Re: Bikefail
« Reply #14 on: July 28, 2013, 10:58:33 pm »

So, MercuryKev, Gus and Wobbly John, any idea what causes this catastrophe?  ???

If you look at the lower jockey wheel (the top one in my photo), the plastic bit has separated from the bearing. I think this is how the chain wrapped round the side of the mech ripping it off.

Note, this was an old Ultegra/600 rear mech where the inner 'cage' does not enclose the jockey wheel on the inside.

I'd only fitted the jockey wheels the previous week.  >:(
If it ain't broke, fix it 'til it is...

MercuryKev

  • Maxin' n Audaxin'
Re: Bikefail
« Reply #15 on: July 28, 2013, 11:37:33 pm »
In my case a chainlink came away at the pin and this link than jammed into the read mech.  This then cause the rear mech to be drawn backwards and up into the rear wheel.  The result was one totalled rear mech and really bent rear hanger - steel frame so in effect one pretty compromised frame as the hangar was bent and twisted.  And yes the rear wheel locked up and I skidded to a halt in front of a bus.

Rhys W

  • I'm single, bilingual
    • Cardiff Ajax
Re: Bikefail
« Reply #16 on: July 28, 2013, 11:40:24 pm »
I damaged a lovely Pinarello Sestriere a few years ago in a submerged pothole. My friend, who looked after it as I went to hospital told me upon its return, "check your brakes, I think they're rubbing"



 :o



Re: Bikefail
« Reply #17 on: August 01, 2013, 11:53:02 am »
Similar to Jurek's fail:-


12-08-18 Crack O' Doom 1 by Chocolatebike1, on Flickr

I'm still waiting for the replacement  ::-)


Re: Bikefail
« Reply #18 on: August 01, 2013, 11:57:02 am »
While I'm at it, a Chris King bottom bracket:-


DSC_0268 by Chocolatebike1, on Flickr

It seized solid at 49.5 miles into a 50 mile ride !



PaulF

  • "World's Scariest Barman"
  • It's only impossible if you stop to think about it
Re: Bikefail
« Reply #19 on: August 01, 2013, 12:04:34 pm »
Similar to Jurek's fail:-


12-08-18 Crack O' Doom 1 by Chocolatebike1, on Flickr

I'm still waiting for the replacement  ::-)




Well as it doesn't look like you'll break it for another 5 years I suggest that you'll have a long wait :)

benborp

  • benbravoorpapa
Re: Bikefail
« Reply #20 on: August 01, 2013, 12:19:49 pm »


Apparently the handling had become a touch 'woolly'.
A world of bedlam trapped inside a small cyclist.

Wowbagger

  • Dez's butler
    • Musings of a Gentleman Cyclist
Re: Bikefail
« Reply #21 on: August 01, 2013, 12:55:09 pm »


Broken Rohloff, 2008.

The most obvious crack is at 12 o'clock, and that lump of flange is ready to part company from the hub, but there were 7 visible cracks when that photo was taken, all emanating from the trailing spokes on the non-drive side. Two others, at 3 o'clock and 4'oclock (ish) are visible in the photo.

We have been operating our current hub quite successfully and without incident for 3 or 4 years now.
Oh, Bach without any doubt. Bach every time for me.

LEE

Re: Bikefail
« Reply #22 on: August 01, 2013, 01:54:30 pm »


Had a very scary descent in Snowdonia before this happened a few weeks later.

Re: Bikefail
« Reply #23 on: August 01, 2013, 03:27:52 pm »
My first Langster made a strange clicking noise on braking for a while before I figured out where the noise was coming from.


Re: Bikefail
« Reply #24 on: August 01, 2013, 04:21:00 pm »
Here's another frame crack that hasn't started at, or near, a tube joint:


"Whoever fights monsters should see to it that in the process he does not become a monster. And when you look long into an abyss, the abyss also looks into you." ~ Friedrich Nietzsche